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    <title>Document</title>
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    <script type="module">
        import * as  THREE from 'https://cdn.skypack.dev/three@0.145.0';
        //三大件
        const scene = new THREE.Scene();
        const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
        const renderer = new THREE.WebGLRenderer({
            antialias: true
        });
        renderer.setSize(window.innerWidth, window.innerHeight);
        document.body.appendChild(renderer.domElement);
        //创建一个立方体
        const geometry = new THREE.BoxGeometry(1,1,1);
        const material = new THREE.MeshPhongMaterial({
            color: 0x00ff00
        });
        const cube = new THREE.Mesh(geometry, material);
        scene.add(cube);
        //设置相机位置
        camera.position.set(5, 5, 5);
        //角度
        camera.lookAt(0,0,0);
        // 创建光
        const light = new THREE.PointLight(0xffffff,1); // soft white light
        light.position.set(10, 20, 30);
        scene.add(light);
        //渲染
        function animate() {
            requestAnimationFrame(animate);
            cube.rotation.x += 0.01;
            cube.rotation.y += 0.01;
            renderer.render(scene, camera);
        }
        animate();
       var a=[],
           b=[],
           c=a==b;
           (c);

    </script>
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